FSG_BUFLEN
amount = min(amount_left, FSG_BUFLEN);
amount = min(common->usb_amount_left, FSG_BUFLEN);
bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL);
max_burst = min_t(unsigned, FSG_BUFLEN / 1024, 15);
amount = min(amount_left, FSG_BUFLEN);
amount = min(amount_left_to_req, FSG_BUFLEN);